20 ! brainliest ! add and simplify your answer.

5x^7 + 4x^6 + 1

Step-by-step explanation:

To solve, all you need to do is collect and combine like-terms (terms with the same variables and powers):

The equation is:

Collect like-terms:

You can rewrite the equation as:

Now combine the like-terms:

Substitute the found sums and differences into the equation:

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.